Here's another alternative to liver etc if you want to do an enzyme prac.
We haven't done this version for years, but one of our teachers resurrected it & it's worked nicely with our IBs this week. I think the original prac idea came from Southern Biological & we just reworked it a bit. You can also find different versions online if you google it.
It uses apple & pectinase, but you can adapt it to use other fruits if you want to compare them. We've just done apple vs tomato. Any tinned fruit will do as long as there's no added sugar, & you can get pectinase powder from any beer brewing shop.
When we first did it years ago the kids broke heaps of 50ml measuring cylinders, so it's best to go with plastic beakers & cylinders if you've got some.
Pectinase Prac Method.docx
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